查询词典 bandwidth

In the commercial equipment, the audio bandwidth tends to be narrower than our amateur equipmentand there are circuits installed to filter out the tones so they are truly subaudible.

在商业设备中，声音频宽比业余设备更窄些，并且，配备有专门的电路用于过滤音频，于是，这些音频信号真正的成为了"亚音"，不会被听到。

This allows us to save bandwidth in video and image representations by subsampling the color information.

这使得我们可以借助对色彩信息的子采样来节省视频和图像信息的带宽。

Also, as we'll see shortly, we can reduce chrominance bandwidth considerably via subsampling, without much loss in visual perception.

另外，正如我们马上就会看到的那样，我们可以通过子采样的方法，在视觉效果不会出现较大损失的前提下，大大减小色度信号带宽。

As a result, by subsampling these chroma values, video standards and compression algorithms can achieve large savings in video bandwidth.

于是，通过对这些色度值进行子采样的方法，视频标准和压缩算法可以大幅度缩减视频带宽。

Before subsampling, let's assume we have a full-bandwidth YCbCr stream. That is, a video source generates a stream of pixel components in the form of Figure 2a.

假设在进行子采样前，我们拥有一路全带宽的 YCbCr 流，即视频源产生了一路像素分量构成的数据流，其形式如图2a 所示。

On the basement of passband subsampling and digital downconvertion, according to QPSK with 30M carrier frequency and 8M bandwidth, digital IF channel is elaborately analyzed .

以对中频为30MHz，带宽为±4MHz的输入QPSK信号进行带通欠采样和数字下变频为基础，提出和分析了中频数字化通道的实现方案，进行了相应的多相低通抽取滤波器的设计，并针对数字中频信号就数字下变频模块进行了仿真，从而验证了整个下变频系统参数设计的可行性。

On the basement of passband subsampling and digital downconvertion, according to QPSK with 30M carrier frequency and 8M bandwidth, digital IF channel is elaborately analyzed .In this module, multiple phase filters are elaborately designed .According to this module, IF digital signal is simulated .

以对中频为30MHz，带宽为±4MHz的输入QPSK信号进行带通欠采样和数字下变频为基础，提出和分析了中频数字化通道的实现方案，进行了相应的多相低通抽取滤波器的设计，并针对数字中频信号就数字下变频模块进行了仿真，从而验证了整个下变频系统参数设计的可行性。

Model of adaptive session is analyzed, and available bandwidth' future estimation is achieved. The fuzzy nonlinear approximation of immune' suppresser is fulfilled by fuzzy rules' self-tuning with self-tuning factor in full domain. Then, in order to improve the traditional PID algorithm fuzzy nonlinear approximation is combined with immune feedback mechanism to adjust PID factors during the course of multimedia transmission.

分析多媒体流自适应节模型，实现IP网络可用带宽的预估计，采用全论域范围内带有自调整因子的模糊规则自调整方法进行免疫抑制量的模糊非线性逼近，并与免疫反馈机理相结合，多媒体流传输过程中自适应整定PID参数以改进传统PID算法。

The surface current distribution of patch is changed because of the stub, so the operating frequency is decreased, the bandwidth is broadened, the return loss in operating range is decreased.

由于短截线的存在，改变了贴片表面电流的分布，由此降低了天线的频率，增大了工作带宽，降低了天线工作频段内的反射损耗。

However, synchronisation between independent wireless networks has some drawbacks which result in reduced bandwidth availability.

但是在各个独立的无线网络之间的同步存在一些问题，从而降低了频带宽度的利用率。

The French are not suggesting a new EU treaty, but they have plenty of other wheezes.

法国人并不是在建议签署一个新的欧盟条约，但他们有许多其他的阴谋。

This letter was written by my brother.

这封信是我弟弟写的。